1. Department of Anesthesiology and Intensive Therapy; Collegium Medicum in Bydgoszcz; Nicolaus Copernicus University of Torun; Bydgoszcz Poland
2. Department of Otolaryngology and Laryngological Oncology; Collegium Medicum in Bydgoszcz; Nicolaus Copernicus University of Torun; Bydgoszcz Poland
3. Department of Biomedical and Mechanical Engineering; University of Technology and Life Sciences in Bydgoszcz; Bydgoszcz Poland
4. Department of General Anesthesiology; Cleveland Clinic; Cleveland OH
5. Department of Anesthesiology and Intensive Therapy; Poznan Medical Science University; Poznan Poland
6. Department of Pathophysiology of Hearing and Balance System; Collegium Medicum in Bydgoszcz; Nicolaus Copernicus University of Torun; Bydgoszcz Poland